Serious vibration around 60-80mph

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   Hi

My 520i really shakes badly when I take it above about 60mph. I've had both sets of wheels balanced but the problem still remains. My garage has suggested that the rear tyres are slightly out of shape. Does this seem like a reasonable explanation or does anyone have any other thoughts. The tyres are the standard issue - nothing fancy or wide. Help would be much appreciated as I bought the car specifically for long comfortable journeys and this is not really happening for me at the moment.

Thanks

Jim

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JimPlayfoot Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 02-June-2003 Location: United Kingdom Status: Offline Points: 8	Topic: Serious vibration around 60-80mph Posted: 14-July-2003 at 10:03
	Hi My 520i really shakes badly when I take it above about 60mph. I've had both sets of wheels balanced but the problem still remains. My garage has suggested that the rear tyres are slightly out of shape. Does this seem like a reasonable explanation or does anyone have any other thoughts. The tyres are the standard issue - nothing fancy or wide. Help would be much appreciated as I bought the car specifically for long comfortable journeys and this is not really happening for me at the moment. Thanks Jim

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micky_h Members Profile Send Private Message Find Members Posts Add to Buddy List Really Senior Member II Joined: 17-February-2003 Location: United Kingdom Status: Offline Points: 798	Posted: 14-July-2003 at 11:12
	Does the vibration disappear at a higher speed or is it there all the time? You could try a different garage and get them to rebalance the wheels again and see what they come up with.The few times I've had viration were down to balancing and once where two wheel bolts had come loose.

JimPlayfoot Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 02-June-2003 Location: United Kingdom Status: Offline Points: 8	Posted: 14-July-2003 at 11:19
	The vibration does seem to disappear at 80mph although the car doesn't feel particularly stable on the road at this speed.

Nick Members Profile Send Private Message Find Members Posts Add to Buddy List Bavarian-Board Contributor BMWCC Area Organiser Yorks & Humber Joined: 21-October-2002 Location: God�s own county... Yorkshire Status: Offline Points: 1319	Posted: 14-July-2003 at 11:27
	I bet it is your steering box.. especially if you have ruled out roadwheel problems. .. old tyres can get flat at the bottom where they have been stood.. the vibes disappear though as the rubber warms up. .. does the car 'wander' instead of keeping to a straight line.. if it does then it is the box. nick

Eamo Members Profile Send Private Message Find Members Posts Add to Buddy List Moderator Group Joined: 13-May-2003 Location: Ireland Status: Offline Points: 3450	Posted: 14-July-2003 at 11:41
	Jim Also check the usual suspects - tracking, bushings, tie rods, condition fo front tyres. Also check your front dampers as the e34's tend to go through front dampers more so than other bmw's

JimPlayfoot Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 02-June-2003 Location: United Kingdom Status: Offline Points: 8	Posted: 14-July-2003 at 11:44
	Thanks guys - gives me something to work on. I'll get back to you if all fails.

Tommy Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 12-April-2003 Location: United Kingdom Status: Offline Points: 14	Posted: 14-July-2003 at 16:45
	I had the same problem with my 530i..Runout on front Discs. (warped)Changed the Disc`s which cured the problem, failing that, possible its either the top or bottom control arm bushings. Edited by Tommy